diff --git a/.github/workflows/run-test-harness.yml b/.github/workflows/run-test-harness.yml
index cbdb732..b2b1cb1 100644
--- a/.github/workflows/run-test-harness.yml
+++ b/.github/workflows/run-test-harness.yml
@@ -13,8 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: DevCycleHQ/test-harness@main
-        env:
-          SDK_CAPABILITIES: '["clientCustomData","v2Config","EdgeDB","CloudBucketing"]'
         with:
           sdks-to-test: python
           sdk-github-sha: ${{github.event.pull_request.head.sha}}
+          sdk-capabilities: '["cloud", "edgeDB", "clientCustomData","v2Config", "allVariables", "allFeatures", "evalReason", "cloudEvalReason"]'
diff --git a/devcycle_python_sdk/api/bucketing_client.py b/devcycle_python_sdk/api/bucketing_client.py
index 1fc9254..698c0fd 100644
--- a/devcycle_python_sdk/api/bucketing_client.py
+++ b/devcycle_python_sdk/api/bucketing_client.py
@@ -15,6 +15,7 @@
 from devcycle_python_sdk.models.feature import Feature
 from devcycle_python_sdk.models.user import DevCycleUser
 from devcycle_python_sdk.models.variable import Variable
+from devcycle_python_sdk.models.eval_reason import EvalReason
 from devcycle_python_sdk.util.strings import slash_join
 
 logger = logging.getLogger(__name__)
@@ -91,11 +92,17 @@ def request(self, method: str, url: str, **kwargs) -> dict:
     def variable(self, key: str, user: DevCycleUser) -> Variable:
         data = self.request("POST", self._url("variables", key), json=user.to_json())
 
+        eval_data = data.get("eval")
+        eval_reason = None
+        if eval_data is not None and isinstance(eval_data, dict):
+            eval_reason = EvalReason.from_json(eval_data)
+
         return Variable(
             _id=data.get("_id"),
             key=data.get("key", ""),
             type=data.get("type", ""),
             value=data.get("value"),
+            eval=eval_reason,
         )
 
     def variables(self, user: DevCycleUser) -> Dict[str, Variable]:
@@ -109,6 +116,11 @@ def variables(self, user: DevCycleUser) -> Dict[str, Variable]:
                 type=str(value.get("type")),
                 value=value.get("value"),
                 isDefaulted=None,
+                eval=(
+                    EvalReason.from_json(value.get("eval"))
+                    if value.get("eval")
+                    else None
+                ),
             )
 
         return result
diff --git a/devcycle_python_sdk/api/local_bucketing.py b/devcycle_python_sdk/api/local_bucketing.py
index 4a26b01..5786bf2 100644
--- a/devcycle_python_sdk/api/local_bucketing.py
+++ b/devcycle_python_sdk/api/local_bucketing.py
@@ -22,7 +22,6 @@
 import devcycle_python_sdk.protobuf.utils as pb_utils
 import devcycle_python_sdk.protobuf.variableForUserParams_pb2 as pb2
 from devcycle_python_sdk.exceptions import (
-    VariableTypeMismatchError,
     MalformedConfigError,
 )
 from devcycle_python_sdk.models.bucketed_config import BucketedConfig
@@ -324,13 +323,6 @@ def get_variable_for_user_protobuf(
                 sdk_variable = pb2.SDKVariable_PB()
                 sdk_variable.ParseFromString(var_bytes)
 
-                if sdk_variable.type != pb_variable_type:
-                    # this situation should never actually happen because the WASM handles
-                    # it internally and returns a null value from the WASM function
-                    # This check is here just in case that logic changes in the future
-                    raise VariableTypeMismatchError(
-                        f"Variable returned does not match requested type: {pb_variable_type}"
-                    )
                 return pb_utils.create_variable(sdk_variable, default_value)
 
     def generate_bucketed_config(self, user: DevCycleUser) -> BucketedConfig:
diff --git a/devcycle_python_sdk/bucketing-lib.release.wasm b/devcycle_python_sdk/bucketing-lib.release.wasm
index f3c33d6..3e4843f 100644
Binary files a/devcycle_python_sdk/bucketing-lib.release.wasm and b/devcycle_python_sdk/bucketing-lib.release.wasm differ
diff --git a/devcycle_python_sdk/cloud_client.py b/devcycle_python_sdk/cloud_client.py
index dd21e63..0a78e97 100644
--- a/devcycle_python_sdk/cloud_client.py
+++ b/devcycle_python_sdk/cloud_client.py
@@ -14,6 +14,9 @@
     BeforeHookError,
     AfterHookError,
 )
+from devcycle_python_sdk.models.eval_reason import (
+    DefaultReasonDetails,
+)
 from devcycle_python_sdk.models.eval_hook import EvalHook
 from devcycle_python_sdk.models.eval_hook_context import HookContext
 from devcycle_python_sdk.models.user import DevCycleUser
@@ -121,7 +124,9 @@ def variable(self, user: DevCycleUser, key: str, default_value: Any) -> Variable
         except NotFoundError:
             logger.warning(f"DevCycle: Variable not found: {key}")
             return Variable.create_default_variable(
-                key=key, default_value=default_value
+                key=key,
+                default_value=default_value,
+                default_reason_detail=DefaultReasonDetails.MISSING_VARIABLE,
             )
         except BeforeHookError as e:
             self.eval_hooks_manager.run_error(context, e)
@@ -130,7 +135,9 @@ def variable(self, user: DevCycleUser, key: str, default_value: Any) -> Variable
         except Exception as e:
             logger.error(f"DevCycle: Error evaluating variable: {e}")
             return Variable.create_default_variable(
-                key=key, default_value=default_value
+                key=key,
+                default_value=default_value,
+                default_reason_detail=DefaultReasonDetails.ERROR,
             )
         finally:
             self.eval_hooks_manager.run_finally(context, variable)
@@ -143,7 +150,9 @@ def variable(self, user: DevCycleUser, key: str, default_value: Any) -> Variable
                 f"DevCycle: Variable {key} is type {type(variable.value)}, but default value is type {type(default_value)}",
             )
             return Variable.create_default_variable(
-                key=key, default_value=default_value
+                key=key,
+                default_value=default_value,
+                default_reason_detail=DefaultReasonDetails.TYPE_MISMATCH,
             )
 
         return variable
diff --git a/devcycle_python_sdk/local_client.py b/devcycle_python_sdk/local_client.py
index cacaac2..dbf97b5 100644
--- a/devcycle_python_sdk/local_client.py
+++ b/devcycle_python_sdk/local_client.py
@@ -6,7 +6,6 @@
 
 from devcycle_python_sdk import DevCycleLocalOptions, AbstractDevCycleClient
 from devcycle_python_sdk.api.local_bucketing import LocalBucketing
-from devcycle_python_sdk.exceptions import VariableTypeMismatchError
 from devcycle_python_sdk.managers.config_manager import EnvironmentConfigManager
 from devcycle_python_sdk.managers.eval_hooks_manager import (
     EvalHooksManager,
@@ -17,6 +16,11 @@
 from devcycle_python_sdk.models.bucketed_config import BucketedConfig
 from devcycle_python_sdk.models.eval_hook import EvalHook
 from devcycle_python_sdk.models.eval_hook_context import HookContext
+from devcycle_python_sdk.models.eval_reason import (
+    DefaultReasonDetails,
+    EvalReason,
+    EvalReasons,
+)
 from devcycle_python_sdk.models.event import DevCycleEvent, EventType
 from devcycle_python_sdk.models.feature import Feature
 from devcycle_python_sdk.models.platform_data import default_platform_data
@@ -139,7 +143,9 @@ def variable(self, user: DevCycleUser, key: str, default_value: Any) -> Variable
                 logger.warning(
                     f"DevCycle: Unable to track AggVariableDefaulted event for Variable {key}: {e}"
                 )
-            return Variable.create_default_variable(key, default_value)
+            return Variable.create_default_variable(
+                key, default_value, DefaultReasonDetails.MISSING_CONFIG
+            )
 
         context = HookContext(key, user, default_value)
         variable = Variable.create_default_variable(
@@ -159,22 +165,28 @@ def variable(self, user: DevCycleUser, key: str, default_value: Any) -> Variable
             )
             if bucketed_variable is not None:
                 variable = bucketed_variable
+            else:
+                variable.eval = EvalReason(
+                    reason=EvalReasons.DEFAULT,
+                    details=DefaultReasonDetails.USER_NOT_TARGETED,
+                )
 
             if before_hook_error is None:
                 self.eval_hooks_manager.run_after(context, variable)
             else:
                 raise before_hook_error
-        except VariableTypeMismatchError:
-            logger.debug("DevCycle: Variable type mismatch, returning default value")
-            return variable
-        except BeforeHookError as e:
-            self.eval_hooks_manager.run_error(context, e)
-            return variable
-        except AfterHookError as e:
-            self.eval_hooks_manager.run_error(context, e)
-            return variable
         except Exception as e:
-            logger.warning(f"DevCycle: Error retrieving variable for user: {e}")
+            variable.eval = EvalReason(
+                reason=EvalReasons.DEFAULT, details=DefaultReasonDetails.ERROR
+            )
+
+            if isinstance(e, BeforeHookError):
+                self.eval_hooks_manager.run_error(context, e)
+            elif isinstance(e, AfterHookError):
+                self.eval_hooks_manager.run_error(context, e)
+            else:
+                logger.warning(f"DevCycle: Error retrieving variable for user: {e}")
+
             return variable
         finally:
             self.eval_hooks_manager.run_finally(context, variable)
diff --git a/devcycle_python_sdk/models/eval_reason.py b/devcycle_python_sdk/models/eval_reason.py
new file mode 100644
index 0000000..ae93984
--- /dev/null
+++ b/devcycle_python_sdk/models/eval_reason.py
@@ -0,0 +1,40 @@
+from dataclasses import dataclass
+from typing import Optional
+
+
+class EvalReasons:
+    """Evaluation reasons constants"""
+
+    DEFAULT = "DEFAULT"
+
+
+class DefaultReasonDetails:
+    """Default reason details constants"""
+
+    MISSING_CONFIG = "Missing Config"
+    USER_NOT_TARGETED = "User Not Targeted"
+    TYPE_MISMATCH = "Variable Type Mismatch"
+    MISSING_VARIABLE = "Missing Variable"
+    ERROR = "Error"
+
+
+@dataclass(order=False)
+class EvalReason:
+    reason: str
+    details: Optional[str] = None
+    target_id: Optional[str] = None
+
+    def to_json(self):
+        return {
+            key: getattr(self, key)
+            for key in self.__dataclass_fields__
+            if getattr(self, key) is not None
+        }
+
+    @classmethod
+    def from_json(cls, data: dict) -> "EvalReason":
+        return cls(
+            reason=data["reason"],
+            details=data.get("details"),
+            target_id=data.get("target_id"),
+        )
diff --git a/devcycle_python_sdk/models/variable.py b/devcycle_python_sdk/models/variable.py
index bce1268..3bace9b 100644
--- a/devcycle_python_sdk/models/variable.py
+++ b/devcycle_python_sdk/models/variable.py
@@ -2,6 +2,8 @@
 from dataclasses import dataclass
 from typing import Optional, Any
 
+from .eval_reason import EvalReason, EvalReasons
+
 
 class TypeEnum:
     BOOLEAN = "Boolean"
@@ -32,16 +34,26 @@ class Variable:
     isDefaulted: Optional[bool] = False
     defaultValue: Any = None
     evalReason: Optional[str] = None
+    eval: Optional[EvalReason] = None
 
     def to_json(self):
-        return {
-            key: getattr(self, key)
-            for key in self.__dataclass_fields__
-            if getattr(self, key) is not None
-        }
+        result = {}
+        for key in self.__dataclass_fields__:
+            value = getattr(self, key)
+            if value is not None:
+                if key == "eval" and isinstance(value, EvalReason):
+                    result[key] = value.to_json()
+                else:
+                    result[key] = value
+        return result
 
     @classmethod
     def from_json(cls, data: dict) -> "Variable":
+        eval_data = data.get("eval")
+        eval_reason = None
+        if eval_data:
+            eval_reason = EvalReason.from_json(eval_data)
+
         return cls(
             _id=data["_id"],
             key=data["key"],
@@ -50,11 +62,20 @@ def from_json(cls, data: dict) -> "Variable":
             isDefaulted=data.get("isDefaulted", None),
             defaultValue=data.get("defaultValue"),
             evalReason=data.get("evalReason"),
+            eval=eval_reason,
         )
 
     @staticmethod
-    def create_default_variable(key: str, default_value: Any) -> "Variable":
+    def create_default_variable(
+        key: str, default_value: Any, default_reason_detail: Optional[str] = None
+    ) -> "Variable":
         var_type = determine_variable_type(default_value)
+        if default_reason_detail is not None:
+            eval_reason = EvalReason(
+                reason=EvalReasons.DEFAULT, details=default_reason_detail
+            )
+        else:
+            eval_reason = None
         return Variable(
             _id=None,
             key=key,
@@ -62,4 +83,5 @@ def create_default_variable(key: str, default_value: Any) -> "Variable":
             value=default_value,
             defaultValue=default_value,
             isDefaulted=True,
+            eval=eval_reason,
         )
diff --git a/devcycle_python_sdk/protobuf/utils.py b/devcycle_python_sdk/protobuf/utils.py
index da6e821..c433bf6 100644
--- a/devcycle_python_sdk/protobuf/utils.py
+++ b/devcycle_python_sdk/protobuf/utils.py
@@ -5,6 +5,7 @@
 from typing import Any, Optional
 
 from devcycle_python_sdk.models.variable import TypeEnum, Variable
+from devcycle_python_sdk.models.eval_reason import EvalReason
 from devcycle_python_sdk.models.user import DevCycleUser
 
 import devcycle_python_sdk.protobuf.variableForUserParams_pb2 as pb2
@@ -82,7 +83,20 @@ def create_dvcuser_pb(user: DevCycleUser) -> pb2.DVCUser_PB:  # type: ignore
     )
 
 
+def create_eval_reason_from_pb(eval_reason_pb: pb2.EvalReason_PB) -> EvalReason:  # type: ignore
+    """Convert EvalReason_PB protobuf message to EvalReason object"""
+    return EvalReason(
+        reason=eval_reason_pb.reason,
+        details=eval_reason_pb.details if eval_reason_pb.details else None,
+        target_id=eval_reason_pb.target_id if eval_reason_pb.target_id else None,
+    )
+
+
 def create_variable(sdk_variable: pb2.SDKVariable_PB, default_value: Any) -> Variable:  # type: ignore
+    eval_reason_obj = None
+    if sdk_variable.HasField("eval"):
+        eval_reason_obj = create_eval_reason_from_pb(sdk_variable.eval)
+
     if sdk_variable.type == pb2.VariableType_PB.Boolean:  # type: ignore
         return Variable(
             _id=None,
@@ -91,6 +105,7 @@ def create_variable(sdk_variable: pb2.SDKVariable_PB, default_value: Any) -> Var
             type=TypeEnum.BOOLEAN,
             isDefaulted=False,
             defaultValue=default_value,
+            eval=eval_reason_obj,
         )
 
     elif sdk_variable.type == pb2.VariableType_PB.String:  # type: ignore
@@ -101,6 +116,7 @@ def create_variable(sdk_variable: pb2.SDKVariable_PB, default_value: Any) -> Var
             type=TypeEnum.STRING,
             isDefaulted=False,
             defaultValue=default_value,
+            eval=eval_reason_obj,
         )
 
     elif sdk_variable.type == pb2.VariableType_PB.Number:  # type: ignore
@@ -111,6 +127,7 @@ def create_variable(sdk_variable: pb2.SDKVariable_PB, default_value: Any) -> Var
             type=TypeEnum.NUMBER,
             isDefaulted=False,
             defaultValue=default_value,
+            eval=eval_reason_obj,
         )
 
     elif sdk_variable.type == pb2.VariableType_PB.JSON:  # type: ignore
@@ -123,6 +140,7 @@ def create_variable(sdk_variable: pb2.SDKVariable_PB, default_value: Any) -> Var
             type=TypeEnum.JSON,
             isDefaulted=False,
             defaultValue=default_value,
+            eval=eval_reason_obj,
         )
 
     else:
diff --git a/devcycle_python_sdk/protobuf/variableForUserParams_pb2.py b/devcycle_python_sdk/protobuf/variableForUserParams_pb2.py
index fdd0257..289f5b9 100644
--- a/devcycle_python_sdk/protobuf/variableForUserParams_pb2.py
+++ b/devcycle_python_sdk/protobuf/variableForUserParams_pb2.py
@@ -1,11 +1,22 @@
 # -*- coding: utf-8 -*-
 # Generated by the protocol buffer compiler.  DO NOT EDIT!
+# NO CHECKED-IN PROTOBUF GENCODE
 # source: variableForUserParams.proto
+# Protobuf Python Version: 5.29.3
 """Generated protocol buffer code."""
-from google.protobuf.internal import builder as _builder
 from google.protobuf import descriptor as _descriptor
 from google.protobuf import descriptor_pool as _descriptor_pool
+from google.protobuf import runtime_version as _runtime_version
 from google.protobuf import symbol_database as _symbol_database
+from google.protobuf.internal import builder as _builder
+_runtime_version.ValidateProtobufRuntimeVersion(
+    _runtime_version.Domain.PUBLIC,
+    5,
+    29,
+    3,
+    '',
+    'variableForUserParams.proto'
+)
 # @@protoc_insertion_point(imports)
 
 _sym_db = _symbol_database.Default()
@@ -13,34 +24,36 @@
 
 
 
-DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x1bvariableForUserParams.proto\"/\n\x0eNullableString\x12\r\n\x05value\x18\x01 \x01(\t\x12\x0e\n\x06isNull\x18\x02 \x01(\x08\"/\n\x0eNullableDouble\x12\r\n\x05value\x18\x01 \x01(\x01\x12\x0e\n\x06isNull\x18\x02 \x01(\x08\"m\n\x0f\x43ustomDataValue\x12\x1d\n\x04type\x18\x01 \x01(\x0e\x32\x0f.CustomDataType\x12\x11\n\tboolValue\x18\x02 \x01(\x08\x12\x13\n\x0b\x64oubleValue\x18\x03 \x01(\x01\x12\x13\n\x0bstringValue\x18\x04 \x01(\t\"\x93\x01\n\x12NullableCustomData\x12-\n\x05value\x18\x01 \x03(\x0b\x32\x1e.NullableCustomData.ValueEntry\x12\x0e\n\x06isNull\x18\x02 \x01(\x08\x1a>\n\nValueEntry\x12\x0b\n\x03key\x18\x01 \x01(\t\x12\x1f\n\x05value\x18\x02 \x01(\x0b\x32\x10.CustomDataValue:\x02\x38\x01\"\x9c\x01\n\x18VariableForUserParams_PB\x12\x0e\n\x06sdkKey\x18\x01 \x01(\t\x12\x13\n\x0bvariableKey\x18\x02 \x01(\t\x12&\n\x0cvariableType\x18\x03 \x01(\x0e\x32\x10.VariableType_PB\x12\x19\n\x04user\x18\x04 \x01(\x0b\x32\x0b.DVCUser_PB\x12\x18\n\x10shouldTrackEvent\x18\x05 \x01(\x08\"\xe8\x02\n\nDVCUser_PB\x12\x0f\n\x07user_id\x18\x01 \x01(\t\x12\x1e\n\x05\x65mail\x18\x02 \x01(\x0b\x32\x0f.NullableString\x12\x1d\n\x04name\x18\x03 \x01(\x0b\x32\x0f.NullableString\x12!\n\x08language\x18\x04 \x01(\x0b\x32\x0f.NullableString\x12 \n\x07\x63ountry\x18\x05 \x01(\x0b\x32\x0f.NullableString\x12!\n\x08\x61ppBuild\x18\x06 \x01(\x0b\x32\x0f.NullableDouble\x12#\n\nappVersion\x18\x07 \x01(\x0b\x32\x0f.NullableString\x12$\n\x0b\x64\x65viceModel\x18\x08 \x01(\x0b\x32\x0f.NullableString\x12\'\n\ncustomData\x18\t \x01(\x0b\x32\x13.NullableCustomData\x12.\n\x11privateCustomData\x18\n \x01(\x0b\x32\x13.NullableCustomData\"\xac\x01\n\x0eSDKVariable_PB\x12\x0b\n\x03_id\x18\x01 \x01(\t\x12\x1e\n\x04type\x18\x02 \x01(\x0e\x32\x10.VariableType_PB\x12\x0b\n\x03key\x18\x03 \x01(\t\x12\x11\n\tboolValue\x18\x04 \x01(\x08\x12\x13\n\x0b\x64oubleValue\x18\x05 \x01(\x01\x12\x13\n\x0bstringValue\x18\x06 \x01(\t\x12#\n\nevalReason\x18\x07 \x01(\x0b\x32\x0f.NullableString*@\n\x0fVariableType_PB\x12\x0b\n\x07\x42oolean\x10\x00\x12\n\n\x06Number\x10\x01\x12\n\n\x06String\x10\x02\x12\x08\n\x04JSON\x10\x03*6\n\x0e\x43ustomDataType\x12\x08\n\x04\x42ool\x10\x00\x12\x07\n\x03Num\x10\x01\x12\x07\n\x03Str\x10\x02\x12\x08\n\x04Null\x10\x03\x42X\n&com.devcycle.sdk.server.local.protobufP\x01Z\x07./proto\xaa\x02\"DevCycle.SDK.Server.Local.Protobufb\x06proto3')
-
-_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, globals())
-_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'variableForUserParams_pb2', globals())
-if _descriptor._USE_C_DESCRIPTORS == False:
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x1bvariableForUserParams.proto\"/\n\x0eNullableString\x12\r\n\x05value\x18\x01 \x01(\t\x12\x0e\n\x06isNull\x18\x02 \x01(\x08\"/\n\x0eNullableDouble\x12\r\n\x05value\x18\x01 \x01(\x01\x12\x0e\n\x06isNull\x18\x02 \x01(\x08\"m\n\x0f\x43ustomDataValue\x12\x1d\n\x04type\x18\x01 \x01(\x0e\x32\x0f.CustomDataType\x12\x11\n\tboolValue\x18\x02 \x01(\x08\x12\x13\n\x0b\x64oubleValue\x18\x03 \x01(\x01\x12\x13\n\x0bstringValue\x18\x04 \x01(\t\"\x93\x01\n\x12NullableCustomData\x12-\n\x05value\x18\x01 \x03(\x0b\x32\x1e.NullableCustomData.ValueEntry\x12\x0e\n\x06isNull\x18\x02 \x01(\x08\x1a>\n\nValueEntry\x12\x0b\n\x03key\x18\x01 \x01(\t\x12\x1f\n\x05value\x18\x02 \x01(\x0b\x32\x10.CustomDataValue:\x02\x38\x01\"\x9c\x01\n\x18VariableForUserParams_PB\x12\x0e\n\x06sdkKey\x18\x01 \x01(\t\x12\x13\n\x0bvariableKey\x18\x02 \x01(\t\x12&\n\x0cvariableType\x18\x03 \x01(\x0e\x32\x10.VariableType_PB\x12\x19\n\x04user\x18\x04 \x01(\x0b\x32\x0b.DVCUser_PB\x12\x18\n\x10shouldTrackEvent\x18\x05 \x01(\x08\"\xe8\x02\n\nDVCUser_PB\x12\x0f\n\x07user_id\x18\x01 \x01(\t\x12\x1e\n\x05\x65mail\x18\x02 \x01(\x0b\x32\x0f.NullableString\x12\x1d\n\x04name\x18\x03 \x01(\x0b\x32\x0f.NullableString\x12!\n\x08language\x18\x04 \x01(\x0b\x32\x0f.NullableString\x12 \n\x07\x63ountry\x18\x05 \x01(\x0b\x32\x0f.NullableString\x12!\n\x08\x61ppBuild\x18\x06 \x01(\x0b\x32\x0f.NullableDouble\x12#\n\nappVersion\x18\x07 \x01(\x0b\x32\x0f.NullableString\x12$\n\x0b\x64\x65viceModel\x18\x08 \x01(\x0b\x32\x0f.NullableString\x12\'\n\ncustomData\x18\t \x01(\x0b\x32\x13.NullableCustomData\x12.\n\x11privateCustomData\x18\n \x01(\x0b\x32\x13.NullableCustomData\"\xed\x01\n\x0eSDKVariable_PB\x12\x0b\n\x03_id\x18\x01 \x01(\t\x12\x1e\n\x04type\x18\x02 \x01(\x0e\x32\x10.VariableType_PB\x12\x0b\n\x03key\x18\x03 \x01(\t\x12\x11\n\tboolValue\x18\x04 \x01(\x08\x12\x13\n\x0b\x64oubleValue\x18\x05 \x01(\x01\x12\x13\n\x0bstringValue\x18\x06 \x01(\t\x12#\n\nevalReason\x18\x07 \x01(\x0b\x32\x0f.NullableString\x12!\n\x08_feature\x18\x08 \x01(\x0b\x32\x0f.NullableString\x12\x1c\n\x04\x65val\x18\t \x01(\x0b\x32\x0e.EvalReason_PB\"C\n\rEvalReason_PB\x12\x0e\n\x06reason\x18\x01 \x01(\t\x12\x0f\n\x07\x64\x65tails\x18\x02 \x01(\t\x12\x11\n\ttarget_id\x18\x03 \x01(\t*@\n\x0fVariableType_PB\x12\x0b\n\x07\x42oolean\x10\x00\x12\n\n\x06Number\x10\x01\x12\n\n\x06String\x10\x02\x12\x08\n\x04JSON\x10\x03*6\n\x0e\x43ustomDataType\x12\x08\n\x04\x42ool\x10\x00\x12\x07\n\x03Num\x10\x01\x12\x07\n\x03Str\x10\x02\x12\x08\n\x04Null\x10\x03\x42X\n&com.devcycle.sdk.server.local.protobufP\x01Z\x07./proto\xaa\x02\"DevCycle.SDK.Server.Local.Protobufb\x06proto3')
 
-  DESCRIPTOR._options = None
-  DESCRIPTOR._serialized_options = b'\n&com.devcycle.sdk.server.local.protobufP\001Z\007./proto\252\002\"DevCycle.SDK.Server.Local.Protobuf'
-  _NULLABLECUSTOMDATA_VALUEENTRY._options = None
-  _NULLABLECUSTOMDATA_VALUEENTRY._serialized_options = b'8\001'
-  _VARIABLETYPE_PB._serialized_start=1087
-  _VARIABLETYPE_PB._serialized_end=1151
-  _CUSTOMDATATYPE._serialized_start=1153
-  _CUSTOMDATATYPE._serialized_end=1207
-  _NULLABLESTRING._serialized_start=31
-  _NULLABLESTRING._serialized_end=78
-  _NULLABLEDOUBLE._serialized_start=80
-  _NULLABLEDOUBLE._serialized_end=127
-  _CUSTOMDATAVALUE._serialized_start=129
-  _CUSTOMDATAVALUE._serialized_end=238
-  _NULLABLECUSTOMDATA._serialized_start=241
-  _NULLABLECUSTOMDATA._serialized_end=388
-  _NULLABLECUSTOMDATA_VALUEENTRY._serialized_start=326
-  _NULLABLECUSTOMDATA_VALUEENTRY._serialized_end=388
-  _VARIABLEFORUSERPARAMS_PB._serialized_start=391
-  _VARIABLEFORUSERPARAMS_PB._serialized_end=547
-  _DVCUSER_PB._serialized_start=550
-  _DVCUSER_PB._serialized_end=910
-  _SDKVARIABLE_PB._serialized_start=913
-  _SDKVARIABLE_PB._serialized_end=1085
+_globals = globals()
+_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
+_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'variableForUserParams_pb2', _globals)
+if not _descriptor._USE_C_DESCRIPTORS:
+  _globals['DESCRIPTOR']._loaded_options = None
+  _globals['DESCRIPTOR']._serialized_options = b'\n&com.devcycle.sdk.server.local.protobufP\001Z\007./proto\252\002\"DevCycle.SDK.Server.Local.Protobuf'
+  _globals['_NULLABLECUSTOMDATA_VALUEENTRY']._loaded_options = None
+  _globals['_NULLABLECUSTOMDATA_VALUEENTRY']._serialized_options = b'8\001'
+  _globals['_VARIABLETYPE_PB']._serialized_start=1221
+  _globals['_VARIABLETYPE_PB']._serialized_end=1285
+  _globals['_CUSTOMDATATYPE']._serialized_start=1287
+  _globals['_CUSTOMDATATYPE']._serialized_end=1341
+  _globals['_NULLABLESTRING']._serialized_start=31
+  _globals['_NULLABLESTRING']._serialized_end=78
+  _globals['_NULLABLEDOUBLE']._serialized_start=80
+  _globals['_NULLABLEDOUBLE']._serialized_end=127
+  _globals['_CUSTOMDATAVALUE']._serialized_start=129
+  _globals['_CUSTOMDATAVALUE']._serialized_end=238
+  _globals['_NULLABLECUSTOMDATA']._serialized_start=241
+  _globals['_NULLABLECUSTOMDATA']._serialized_end=388
+  _globals['_NULLABLECUSTOMDATA_VALUEENTRY']._serialized_start=326
+  _globals['_NULLABLECUSTOMDATA_VALUEENTRY']._serialized_end=388
+  _globals['_VARIABLEFORUSERPARAMS_PB']._serialized_start=391
+  _globals['_VARIABLEFORUSERPARAMS_PB']._serialized_end=547
+  _globals['_DVCUSER_PB']._serialized_start=550
+  _globals['_DVCUSER_PB']._serialized_end=910
+  _globals['_SDKVARIABLE_PB']._serialized_start=913
+  _globals['_SDKVARIABLE_PB']._serialized_end=1150
+  _globals['_EVALREASON_PB']._serialized_start=1152
+  _globals['_EVALREASON_PB']._serialized_end=1219
 # @@protoc_insertion_point(module_scope)
diff --git a/devcycle_python_sdk/protobuf/variableForUserParams_pb2.pyi b/devcycle_python_sdk/protobuf/variableForUserParams_pb2.pyi
index abfd89c..175eee2 100644
--- a/devcycle_python_sdk/protobuf/variableForUserParams_pb2.pyi
+++ b/devcycle_python_sdk/protobuf/variableForUserParams_pb2.pyi
@@ -4,117 +4,139 @@ from google.protobuf import descriptor as _descriptor
 from google.protobuf import message as _message
 from typing import ClassVar as _ClassVar, Mapping as _Mapping, Optional as _Optional, Union as _Union
 
-Bool: CustomDataType
-Boolean: VariableType_PB
 DESCRIPTOR: _descriptor.FileDescriptor
+
+class VariableType_PB(int, metaclass=_enum_type_wrapper.EnumTypeWrapper):
+    __slots__ = ()
+    Boolean: _ClassVar[VariableType_PB]
+    Number: _ClassVar[VariableType_PB]
+    String: _ClassVar[VariableType_PB]
+    JSON: _ClassVar[VariableType_PB]
+
+class CustomDataType(int, metaclass=_enum_type_wrapper.EnumTypeWrapper):
+    __slots__ = ()
+    Bool: _ClassVar[CustomDataType]
+    Num: _ClassVar[CustomDataType]
+    Str: _ClassVar[CustomDataType]
+    Null: _ClassVar[CustomDataType]
+Boolean: VariableType_PB
+Number: VariableType_PB
+String: VariableType_PB
 JSON: VariableType_PB
-Null: CustomDataType
+Bool: CustomDataType
 Num: CustomDataType
-Number: VariableType_PB
 Str: CustomDataType
-String: VariableType_PB
+Null: CustomDataType
+
+class NullableString(_message.Message):
+    __slots__ = ("value", "isNull")
+    VALUE_FIELD_NUMBER: _ClassVar[int]
+    ISNULL_FIELD_NUMBER: _ClassVar[int]
+    value: str
+    isNull: bool
+    def __init__(self, value: _Optional[str] = ..., isNull: bool = ...) -> None: ...
+
+class NullableDouble(_message.Message):
+    __slots__ = ("value", "isNull")
+    VALUE_FIELD_NUMBER: _ClassVar[int]
+    ISNULL_FIELD_NUMBER: _ClassVar[int]
+    value: float
+    isNull: bool
+    def __init__(self, value: _Optional[float] = ..., isNull: bool = ...) -> None: ...
 
 class CustomDataValue(_message.Message):
-    __slots__ = ["boolValue", "doubleValue", "stringValue", "type"]
+    __slots__ = ("type", "boolValue", "doubleValue", "stringValue")
+    TYPE_FIELD_NUMBER: _ClassVar[int]
     BOOLVALUE_FIELD_NUMBER: _ClassVar[int]
     DOUBLEVALUE_FIELD_NUMBER: _ClassVar[int]
     STRINGVALUE_FIELD_NUMBER: _ClassVar[int]
-    TYPE_FIELD_NUMBER: _ClassVar[int]
+    type: CustomDataType
     boolValue: bool
     doubleValue: float
     stringValue: str
-    type: CustomDataType
     def __init__(self, type: _Optional[_Union[CustomDataType, str]] = ..., boolValue: bool = ..., doubleValue: _Optional[float] = ..., stringValue: _Optional[str] = ...) -> None: ...
 
-class DVCUser_PB(_message.Message):
-    __slots__ = ["appBuild", "appVersion", "country", "customData", "deviceModel", "email", "language", "name", "privateCustomData", "user_id"]
-    APPBUILD_FIELD_NUMBER: _ClassVar[int]
-    APPVERSION_FIELD_NUMBER: _ClassVar[int]
-    COUNTRY_FIELD_NUMBER: _ClassVar[int]
-    CUSTOMDATA_FIELD_NUMBER: _ClassVar[int]
-    DEVICEMODEL_FIELD_NUMBER: _ClassVar[int]
-    EMAIL_FIELD_NUMBER: _ClassVar[int]
-    LANGUAGE_FIELD_NUMBER: _ClassVar[int]
-    NAME_FIELD_NUMBER: _ClassVar[int]
-    PRIVATECUSTOMDATA_FIELD_NUMBER: _ClassVar[int]
-    USER_ID_FIELD_NUMBER: _ClassVar[int]
-    appBuild: NullableDouble
-    appVersion: NullableString
-    country: NullableString
-    customData: NullableCustomData
-    deviceModel: NullableString
-    email: NullableString
-    language: NullableString
-    name: NullableString
-    privateCustomData: NullableCustomData
-    user_id: str
-    def __init__(self, user_id: _Optional[str] = ..., email: _Optional[_Union[NullableString, _Mapping]] = ..., name: _Optional[_Union[NullableString, _Mapping]] = ..., language: _Optional[_Union[NullableString, _Mapping]] = ..., country: _Optional[_Union[NullableString, _Mapping]] = ..., appBuild: _Optional[_Union[NullableDouble, _Mapping]] = ..., appVersion: _Optional[_Union[NullableString, _Mapping]] = ..., deviceModel: _Optional[_Union[NullableString, _Mapping]] = ..., customData: _Optional[_Union[NullableCustomData, _Mapping]] = ..., privateCustomData: _Optional[_Union[NullableCustomData, _Mapping]] = ...) -> None: ...
-
 class NullableCustomData(_message.Message):
-    __slots__ = ["isNull", "value"]
+    __slots__ = ("value", "isNull")
     class ValueEntry(_message.Message):
-        __slots__ = ["key", "value"]
+        __slots__ = ("key", "value")
         KEY_FIELD_NUMBER: _ClassVar[int]
         VALUE_FIELD_NUMBER: _ClassVar[int]
         key: str
         value: CustomDataValue
         def __init__(self, key: _Optional[str] = ..., value: _Optional[_Union[CustomDataValue, _Mapping]] = ...) -> None: ...
-    ISNULL_FIELD_NUMBER: _ClassVar[int]
     VALUE_FIELD_NUMBER: _ClassVar[int]
-    isNull: bool
+    ISNULL_FIELD_NUMBER: _ClassVar[int]
     value: _containers.MessageMap[str, CustomDataValue]
+    isNull: bool
     def __init__(self, value: _Optional[_Mapping[str, CustomDataValue]] = ..., isNull: bool = ...) -> None: ...
 
-class NullableDouble(_message.Message):
-    __slots__ = ["isNull", "value"]
-    ISNULL_FIELD_NUMBER: _ClassVar[int]
-    VALUE_FIELD_NUMBER: _ClassVar[int]
-    isNull: bool
-    value: float
-    def __init__(self, value: _Optional[float] = ..., isNull: bool = ...) -> None: ...
+class VariableForUserParams_PB(_message.Message):
+    __slots__ = ("sdkKey", "variableKey", "variableType", "user", "shouldTrackEvent")
+    SDKKEY_FIELD_NUMBER: _ClassVar[int]
+    VARIABLEKEY_FIELD_NUMBER: _ClassVar[int]
+    VARIABLETYPE_FIELD_NUMBER: _ClassVar[int]
+    USER_FIELD_NUMBER: _ClassVar[int]
+    SHOULDTRACKEVENT_FIELD_NUMBER: _ClassVar[int]
+    sdkKey: str
+    variableKey: str
+    variableType: VariableType_PB
+    user: DVCUser_PB
+    shouldTrackEvent: bool
+    def __init__(self, sdkKey: _Optional[str] = ..., variableKey: _Optional[str] = ..., variableType: _Optional[_Union[VariableType_PB, str]] = ..., user: _Optional[_Union[DVCUser_PB, _Mapping]] = ..., shouldTrackEvent: bool = ...) -> None: ...
 
-class NullableString(_message.Message):
-    __slots__ = ["isNull", "value"]
-    ISNULL_FIELD_NUMBER: _ClassVar[int]
-    VALUE_FIELD_NUMBER: _ClassVar[int]
-    isNull: bool
-    value: str
-    def __init__(self, value: _Optional[str] = ..., isNull: bool = ...) -> None: ...
+class DVCUser_PB(_message.Message):
+    __slots__ = ("user_id", "email", "name", "language", "country", "appBuild", "appVersion", "deviceModel", "customData", "privateCustomData")
+    USER_ID_FIELD_NUMBER: _ClassVar[int]
+    EMAIL_FIELD_NUMBER: _ClassVar[int]
+    NAME_FIELD_NUMBER: _ClassVar[int]
+    LANGUAGE_FIELD_NUMBER: _ClassVar[int]
+    COUNTRY_FIELD_NUMBER: _ClassVar[int]
+    APPBUILD_FIELD_NUMBER: _ClassVar[int]
+    APPVERSION_FIELD_NUMBER: _ClassVar[int]
+    DEVICEMODEL_FIELD_NUMBER: _ClassVar[int]
+    CUSTOMDATA_FIELD_NUMBER: _ClassVar[int]
+    PRIVATECUSTOMDATA_FIELD_NUMBER: _ClassVar[int]
+    user_id: str
+    email: NullableString
+    name: NullableString
+    language: NullableString
+    country: NullableString
+    appBuild: NullableDouble
+    appVersion: NullableString
+    deviceModel: NullableString
+    customData: NullableCustomData
+    privateCustomData: NullableCustomData
+    def __init__(self, user_id: _Optional[str] = ..., email: _Optional[_Union[NullableString, _Mapping]] = ..., name: _Optional[_Union[NullableString, _Mapping]] = ..., language: _Optional[_Union[NullableString, _Mapping]] = ..., country: _Optional[_Union[NullableString, _Mapping]] = ..., appBuild: _Optional[_Union[NullableDouble, _Mapping]] = ..., appVersion: _Optional[_Union[NullableString, _Mapping]] = ..., deviceModel: _Optional[_Union[NullableString, _Mapping]] = ..., customData: _Optional[_Union[NullableCustomData, _Mapping]] = ..., privateCustomData: _Optional[_Union[NullableCustomData, _Mapping]] = ...) -> None: ...
 
 class SDKVariable_PB(_message.Message):
-    __slots__ = ["_id", "boolValue", "doubleValue", "evalReason", "key", "stringValue", "type"]
+    __slots__ = ("_id", "type", "key", "boolValue", "doubleValue", "stringValue", "evalReason", "_feature", "eval")
+    _ID_FIELD_NUMBER: _ClassVar[int]
+    TYPE_FIELD_NUMBER: _ClassVar[int]
+    KEY_FIELD_NUMBER: _ClassVar[int]
     BOOLVALUE_FIELD_NUMBER: _ClassVar[int]
     DOUBLEVALUE_FIELD_NUMBER: _ClassVar[int]
-    EVALREASON_FIELD_NUMBER: _ClassVar[int]
-    KEY_FIELD_NUMBER: _ClassVar[int]
     STRINGVALUE_FIELD_NUMBER: _ClassVar[int]
-    TYPE_FIELD_NUMBER: _ClassVar[int]
-    _ID_FIELD_NUMBER: _ClassVar[int]
+    EVALREASON_FIELD_NUMBER: _ClassVar[int]
+    _FEATURE_FIELD_NUMBER: _ClassVar[int]
+    EVAL_FIELD_NUMBER: _ClassVar[int]
     _id: str
+    type: VariableType_PB
+    key: str
     boolValue: bool
     doubleValue: float
-    evalReason: NullableString
-    key: str
     stringValue: str
-    type: VariableType_PB
-    def __init__(self, _id: _Optional[str] = ..., type: _Optional[_Union[VariableType_PB, str]] = ..., key: _Optional[str] = ..., boolValue: bool = ..., doubleValue: _Optional[float] = ..., stringValue: _Optional[str] = ..., evalReason: _Optional[_Union[NullableString, _Mapping]] = ...) -> None: ...
-
-class VariableForUserParams_PB(_message.Message):
-    __slots__ = ["sdkKey", "shouldTrackEvent", "user", "variableKey", "variableType"]
-    SDKKEY_FIELD_NUMBER: _ClassVar[int]
-    SHOULDTRACKEVENT_FIELD_NUMBER: _ClassVar[int]
-    USER_FIELD_NUMBER: _ClassVar[int]
-    VARIABLEKEY_FIELD_NUMBER: _ClassVar[int]
-    VARIABLETYPE_FIELD_NUMBER: _ClassVar[int]
-    sdkKey: str
-    shouldTrackEvent: bool
-    user: DVCUser_PB
-    variableKey: str
-    variableType: VariableType_PB
-    def __init__(self, sdkKey: _Optional[str] = ..., variableKey: _Optional[str] = ..., variableType: _Optional[_Union[VariableType_PB, str]] = ..., user: _Optional[_Union[DVCUser_PB, _Mapping]] = ..., shouldTrackEvent: bool = ...) -> None: ...
-
-class VariableType_PB(int, metaclass=_enum_type_wrapper.EnumTypeWrapper):
-    __slots__ = []
+    evalReason: NullableString
+    _feature: NullableString
+    eval: EvalReason_PB
+    def __init__(self, _id: _Optional[str] = ..., type: _Optional[_Union[VariableType_PB, str]] = ..., key: _Optional[str] = ..., boolValue: bool = ..., doubleValue: _Optional[float] = ..., stringValue: _Optional[str] = ..., evalReason: _Optional[_Union[NullableString, _Mapping]] = ..., _feature: _Optional[_Union[NullableString, _Mapping]] = ..., eval: _Optional[_Union[EvalReason_PB, _Mapping]] = ...) -> None: ...
 
-class CustomDataType(int, metaclass=_enum_type_wrapper.EnumTypeWrapper):
-    __slots__ = []
+class EvalReason_PB(_message.Message):
+    __slots__ = ("reason", "details", "target_id")
+    REASON_FIELD_NUMBER: _ClassVar[int]
+    DETAILS_FIELD_NUMBER: _ClassVar[int]
+    TARGET_ID_FIELD_NUMBER: _ClassVar[int]
+    reason: str
+    details: str
+    target_id: str
+    def __init__(self, reason: _Optional[str] = ..., details: _Optional[str] = ..., target_id: _Optional[str] = ...) -> None: ...
diff --git a/protobuf/variableForUserParams.proto b/protobuf/variableForUserParams.proto
index f1f31d2..5320095 100644
--- a/protobuf/variableForUserParams.proto
+++ b/protobuf/variableForUserParams.proto
@@ -70,4 +70,12 @@ message SDKVariable_PB {
     double doubleValue = 5;
     string stringValue = 6;
     NullableString evalReason = 7;
+    NullableString _feature = 8; 
+    EvalReason_PB eval = 9;
+}
+
+message EvalReason_PB {
+  string reason = 1;
+  string details = 2;
+  string target_id = 3;
 }
diff --git a/test/api/test_local_bucketing.py b/test/api/test_local_bucketing.py
index a01f9f4..207f10c 100644
--- a/test/api/test_local_bucketing.py
+++ b/test/api/test_local_bucketing.py
@@ -10,6 +10,7 @@
     Project,
     ProjectSettings,
 )
+from devcycle_python_sdk.models.eval_reason import EvalReason
 from devcycle_python_sdk.models.feature import Feature
 from devcycle_python_sdk.models.variable import Variable
 from devcycle_python_sdk.models.platform_data import default_platform_data
@@ -155,6 +156,11 @@ def test_generate_bucketed_config(self):
                 evalReason=None,
             )
         }
+        expected_eval = EvalReason(
+            reason="TARGETING_MATCH",
+            details="All Users",
+            target_id="63125321d31c601f992288bc",
+        )
         expected_variables = {
             "a-cool-new-feature": Variable(
                 _id="62fbf6566f1ba302829f9e34",
@@ -164,6 +170,7 @@ def test_generate_bucketed_config(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "string-var": Variable(
                 _id="63125320a4719939fd57cb2b",
@@ -173,6 +180,7 @@ def test_generate_bucketed_config(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "json-var": Variable(
                 _id="64372363125123fca69d3f7b",
@@ -186,6 +194,7 @@ def test_generate_bucketed_config(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "num-var": Variable(
                 _id="65272363125123fca69d3a7d",
@@ -195,6 +204,7 @@ def test_generate_bucketed_config(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "float-var": Variable(
                 _id="61200363125123fca69d3a7a",
@@ -204,6 +214,7 @@ def test_generate_bucketed_config(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
         }
 
diff --git a/test/test_cloud_client.py b/test/test_cloud_client.py
index 5a1c24e..e9e863b 100644
--- a/test/test_cloud_client.py
+++ b/test/test_cloud_client.py
@@ -5,6 +5,7 @@
 from time import time
 from unittest.mock import patch
 
+
 from devcycle_python_sdk import DevCycleCloudClient, DevCycleCloudOptions
 from devcycle_python_sdk.models.eval_hook import EvalHook
 from devcycle_python_sdk.models.user import DevCycleUser
@@ -97,6 +98,8 @@ def test_variable_exceptions(self, mock_variable_call):
         self.assertIsNotNone(result)
         self.assertEqual(result.value, "default_value")
         self.assertTrue(result.isDefaulted)
+        self.assertEqual(result.eval.reason, "DEFAULT")
+        self.assertEqual(result.eval.details, "Missing Variable")
 
         # other exception - return default
         mock_variable_call.reset_mock()
@@ -105,6 +108,8 @@ def test_variable_exceptions(self, mock_variable_call):
         self.assertIsNotNone(result)
         self.assertEqual(result.value, "default_value")
         self.assertTrue(result.isDefaulted)
+        self.assertEqual(result.eval.reason, "DEFAULT")
+        self.assertEqual(result.eval.details, "Error")
 
     @patch("devcycle_python_sdk.api.bucketing_client.BucketingAPIClient.variable")
     def test_variable_type_mismatch(self, mock_variable_call):
@@ -116,6 +121,8 @@ def test_variable_type_mismatch(self, mock_variable_call):
         self.assertIsNotNone(result)
         self.assertEqual(result.value, "default_value")
         self.assertTrue(result.isDefaulted)
+        self.assertEqual(result.eval.reason, "DEFAULT")
+        self.assertEqual(result.eval.details, "Variable Type Mismatch")
 
     @patch("devcycle_python_sdk.api.bucketing_client.BucketingAPIClient.variable")
     def test_variable_value_defaults(self, mock_variable_call):
diff --git a/test/test_local_client.py b/test/test_local_client.py
index 2e033e1..7764bd7 100644
--- a/test/test_local_client.py
+++ b/test/test_local_client.py
@@ -10,6 +10,7 @@
 from devcycle_python_sdk.local_client import _validate_user, _validate_sdk_key
 from devcycle_python_sdk.exceptions import MalformedConfigError
 from devcycle_python_sdk.models.eval_hook import EvalHook
+from devcycle_python_sdk.models.eval_reason import EvalReason
 from devcycle_python_sdk.models.event import DevCycleEvent
 from devcycle_python_sdk.models.feature import Feature
 from devcycle_python_sdk.api.local_bucketing import LocalBucketing
@@ -208,6 +209,8 @@ def test_variable_default(self):
             self.assertEqual(result.defaultValue, test_value)
             self.assertEqual(result.value, test_value)
             self.assertEqual(result.type, value_type)
+            self.assertEqual(result.eval.reason, "DEFAULT")
+            self.assertEqual(result.eval.details, "User Not Targeted")
 
     @responses.activate
     def test_variable_with_bucketing(self):
@@ -241,6 +244,9 @@ def test_variable_with_bucketing(self):
                 self.assertDictEqual(result.value, expected, msg="Test key: " + key)
             else:
                 self.assertEqual(result.value, expected, msg="Test key: " + key)
+            self.assertEqual(result.eval.reason, "TARGETING_MATCH")
+            self.assertEqual(result.eval.details, "All Users")
+            self.assertEqual(result.eval.target_id, "63125321d31c601f992288bc")
 
     @responses.activate
     def test_variable_with_events(self):
@@ -294,7 +300,11 @@ def test_all_variables(self):
         user = DevCycleUser(user_id="1234")
 
         result = self.client.all_variables(user)
-
+        expected_eval = EvalReason(
+            reason="TARGETING_MATCH",
+            details="All Users",
+            target_id="63125321d31c601f992288bc",
+        )
         expected_variables = {
             "a-cool-new-feature": Variable(
                 _id="62fbf6566f1ba302829f9e34",
@@ -304,6 +314,7 @@ def test_all_variables(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "string-var": Variable(
                 _id="63125320a4719939fd57cb2b",
@@ -313,6 +324,7 @@ def test_all_variables(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "json-var": Variable(
                 _id="64372363125123fca69d3f7b",
@@ -326,6 +338,7 @@ def test_all_variables(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "num-var": Variable(
                 _id="65272363125123fca69d3a7d",
@@ -335,6 +348,7 @@ def test_all_variables(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
             "float-var": Variable(
                 _id="61200363125123fca69d3a7a",
@@ -344,6 +358,7 @@ def test_all_variables(self):
                 isDefaulted=None,
                 defaultValue=None,
                 evalReason=None,
+                eval=expected_eval,
             ),
         }
         self.assertEqual(result, expected_variables)
diff --git a/update_wasm_lib.sh b/update_wasm_lib.sh
index 40a363b..93b0472 100755
--- a/update_wasm_lib.sh
+++ b/update_wasm_lib.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-BUCKETING_LIB_VERSION="1.35.1"
+BUCKETING_LIB_VERSION="1.40.2"
 
 if [[ -n "$1" ]]; then
   BUCKETING_LIB_VERSION="$1"